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1  Bitcoin / Mining / 50% cpu usage when mining with 2 gpus on: April 16, 2011, 10:26:55 PM
So I've been mining with my 6950 and 4850 for about a month now and just recently I noticed that my cpu usage is at 50% when mining.

If I unplug the cable to my 4850 and just mine with my 6950 the cpu usage is ~0%.

I quickly found that I was not the only person having this problem as seen in this thread: http://bitcointalk.org/index.php?topic=4446.0
Unfortunately there doesn't seem to be a definitive answer as to how to fix this problem.

My electricity rate is pretty cheap (6.62 /kWh) but I'm wondering if it's even worth mining with my 4850 as I am paying to power it and half my cpu for ~70000 kH/s.

Relevant specs:
poclbm 2011-03-25
Windows 7 Professional x64
AMD Stream 2.2
Catalyst 11.3

AMD 6950 2GB unlocked shaders
AMD 4850
Intel i5 2500k

Any help is appreciated.
2  Bitcoin / Mining / Anyone try AMD Stream 2.4? on: April 08, 2011, 04:31:18 AM
I was wondering if anyone has tried AMD's new version of stream or as they now call it AMD Accelerated Parallel Processing (APP) 2.4

How does it affect your MH/s compared to older versions?

I was using 2.2 before I was forced to reformat my computer so I'm just going to continue with that. Hopefully it works good with catalyst 11.3.
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